James a



(No Model.)

J. A. DUNNING.

METALLIC RAILROAD TLB.v No. 372,525. Patented Nov. 1, 1887.

3 "Hmmm UNITED STATES PATENT Ormea JAMES A. DUNNING, OF AULANDER, NORTH CAROLINA.

METALLIC RAILROAD-TIE.

SPECIFICATION forming part of Letters Patent No. 372,525, dated November l, 1887.

Application filed March Q1, 18S?.

.To all whom it may concern:

Be it known that I, JAMES A. DUNNING, a citizen of the United States, residing at Au. lander, in the county of Bertie and State of North Carolina, have invented certain new and useful Improvements in Metallic Railroad-Ties; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appeitains to make and use the same, reference being had to the accompanying drawings, and toletters or figures of reference marked thereon, which form a part of' this specification.

Figure l of the drawings isa perspective view of my invention. Fig. 2 is a vertical horizontal section of' same. Fig. 3 is a bottoni view.. Fig. et is a section of track with my improved ties laid. Fig. 5 is a detail perspective view of rail-fasteneiu This invention has relation toiiietallic i'ailway-ties; and it consists in the construction and novel combination of devices, as hereinafter set forth.

The object of the invention is to provide a light and durable metallic tie, which can be readily and economically manufactured, and which will serve important purposes in the construction of railroads.

In the accompanying` drawings, the letter A designates the body of the tie, which is designed to be made ofslieet-ii'on, which is bent in tie forni, its longitudinal angles being rounded, as indicated, and the ends preferably beveled, as shown. rllie bottoni of the tie is transversely corrugated, usually at the ends and middle portion, as indicated at B B, and smooth bearing-surfaces are left, as O, for the oblique bar-nuts D, which receive and secure the ends of' the b'olts E E, which secure the rail-fastenings F to the top of the tie. The side walls of' the tie are also corrugated, the corrugations running vertically. rlhe object of' the corrngations is twofold-to strengthen the tie and to prevent it from moving in its seat in the ground or roadway.

G Gare the inside blocks orbearings,whieh are designed to ll the liollowof the tie under those parts thereof on which the rails bear. These blocks preferably extend transversely between the bolts E E, so that they are firmly secured in position. The tie is designed to be filled between the blocks with earth to Serial No. 231,730. (No model.)

malte it solid and weighty, so that it will hold its position without vibration, and the metallie noise, which would be otherwise caused by the running ovei a hollow tie, will be deadened.

The bar-nuts on the under side of the tie are obliquelyarranged to receive the threaded ends of the bolts when the bolts are pressed downward, as shown, and also serve to brace the tie and prevent it from moving in its seat in the ground.

Each rail-fastening F is provided with a play hook, m, and the lateral notches n, so that it can be slipped onthe neck of the bolt without running the same from the tie. It is also provided with a lateral guideflange, z, on one side of' the notch, which rises at the side of the bolthead and prevents the fastening from slipping away from the bolt. At the saine time when the bolt is turned up suffi ciently to allow its head to clear this flange the fastening can be readily removed and replaced. This guard-flange may also serve to lock the bolt when bent inward a little against its head. v

Having described this invention, what I claim, and desire to secure by Letters Patent, is-

l. A quadrangular tubular sheet metal railroad-tie having corrugated earth bearingsurfaces, and smooth bearings for the fastenings and nuts, substantially as specified.

2. A quadrangularV corrugated tubular slieet-iiietal railroad-tie having fastening-bolts extending through perforations at its ends, nuts therefor, and bearing-blocks filling the bottom of' the tie between said bolts at each end under the rail-bearing, substantially as specified.

3. A quadiangiilar tubular corrugated sheetmetal railroad-tie having fasteningbolts extending through perforations at its ends, oblique baunuts in the under side of said tie, and bearing-blocks filling the hollow of the tie between said bolts at each end under the rail-bearing, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

J. A. DUNNING.

llfitnesses:

PHIL. C. MASI, THEO. MUNGEN.

IOO 

